30+ Interview Questions and Answers

Bug life cycle is the process of identifying, reporting, fixing, retesting, and closing bugs in a software project.

• Bug is identified by a tester during testing phase

• Bug is reported to the development team

• Development team fixes the bug

• Tester retests the bug to ensure it is fixed

• Bug is closed once confirmed fixed

Iterator and generator are used in Python to iterate over a sequence of elements. .pyc files are compiled Python files.

• Iterator in Python is an object that enables a programmer to traverse a container, like a list.

• Generator in Python is a function that returns an iterator. It generates values using the yield keyword.

• Example of iterator: for num in range(5): print(num)

• Example of generator: def square_numbers(n): for i in range(n): yield i*i

• .pyc files are compiled Python files ...read more

Java 8 and 11 introduced several new features and improvements to the language.

• Java 8 introduced lambda expressions, functional interfaces, streams, and default methods.

• Java 11 introduced local variable syntax for lambda parameters, HTTP client API, and new string methods.

• Example of Java 8 lambda expression: (x, y) -> x + y

• Example of Java 11 HTTP client API: HttpClient client = HttpClient.newHttpClient();

call, bind, and apply are methods used to manipulate the value of 'this' in JavaScript functions.

• Call invokes a function with a specified 'this' value and arguments provided individually.

• Bind creates a new function that, when called, has its 'this' keyword set to the provided value.

• Apply invokes a function with a specified 'this' value and arguments provided as an array.

• All three methods are used to control the value of 'this' in a function.

• Example: myFunction.call(thisValue,...read more

Angular is a front-end framework, Node.js is a back-end runtime environment, and Express.js is a web application framework for Node.js.

• Angular is used for building dynamic single-page applications (SPAs) with HTML, CSS, and TypeScript.

• Node.js is used for building scalable network applications and is based on the V8 JavaScript engine.

• Express.js is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications.

• Ang...read more

Sort an array of strings in descending order

• Use the sort() method with a custom compare function to sort the array in descending order

• Example: ['apple', 'banana', 'cherry'].sort((a, b) => b.localeCompare(a)) will result in ['cherry', 'banana', 'apple']

I encourage open communication and collaboration, identify the root cause of conflicts, and facilitate a resolution that benefits the program.

• Encourage open communication and active listening to understand all perspectives

• Identify the root cause of conflicts and address them directly

• Facilitate a resolution that benefits the program and all parties involved

• Document the conflict and resolution for future reference

• Provide training and resources to prevent future conflicts

An AWS full project flow chart outlines the entire process of a project using AWS services.

• Start with defining project requirements and goals

• Design architecture using AWS services like EC2, S3, RDS, etc.

• Implement the design by setting up resources and configuring services

• Test the project to ensure functionality and performance

• Deploy the project on AWS cloud

• Monitor and maintain the project for optimal performance

Address underperformance through clear communication, identifying root causes, setting goals, and providing support.

• Communicate expectations and provide feedback regularly

• Identify the root cause of underperformance and address it

• Set clear goals and provide support to achieve them

• Offer training, coaching, or mentoring if necessary

• Consider reassigning tasks or adjusting workload

• Document performance issues and create a performance improvement plan

• If necessary, initiate disciplin...read more

Heap sort is a comparison-based sorting algorithm that uses a binary heap data structure.

• Heap sort works by building a binary heap from the array and then repeatedly extracting the maximum element and placing it at the end of the array.

• The heap is maintained as a complete binary tree, where each parent node is greater than or equal to its children.

• The time complexity of heap sort is O(n log n) and it is an in-place sorting algorithm.

• Heap sort is not stable, meaning that the r...read more

Common industry protocols include SPI, I2C, and CAN for communication between devices.

• SPI (Serial Peripheral Interface) is a synchronous serial communication protocol commonly used for communication between microcontrollers and peripheral devices.

• I2C (Inter-Integrated Circuit) is a multi-master, multi-slave serial communication protocol used for connecting low-speed peripherals to a motherboard or embedded system.

• CAN (Controller Area Network) is a robust serial communication ...read more

Call by value passes a copy of the variable, call by reference passes the actual variable, and call by pointer passes the memory address of the variable.

• Call by value: Changes made to the parameter inside the function do not affect the original variable. Example: int x = 10; func(x);

• Call by reference: Changes made to the parameter inside the function affect the original variable. Example: void func(int &x) { x = 20; }

• Call by pointer: Passes the memory address of the variable....read more

To fix a specific problem related to the CT device, follow these steps:

• Identify the specific problem by observing the symptoms or error messages

• Check the device's power supply and ensure it is properly connected

• Restart the CT device and see if the problem persists

• Consult the device's user manual or technical documentation for troubleshooting steps

• Contact the manufacturer's technical support for further assistance

Failed jobs can be reprocessed by identifying the root cause of failure, fixing the issue, and resubmitting the job.

• Identify the reason for job failure by checking logs and error messages.

• Fix the issue causing the failure, such as correcting code errors or resolving resource constraints.

• Resubmit the job after making necessary changes to ensure successful processing.

• Implement monitoring and alerting systems to proactively identify and address potential failures.

• Consider implem...read more

Design principles are guidelines for creating software that is maintainable, scalable, and efficient.

• Design principles help ensure that software is easy to modify and extend over time

• They promote code reuse and reduce the likelihood of bugs and errors

• Examples of design principles include SOLID, DRY, and KISS

• SOLID stands for Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion

• DRY stands for Don't Repeat Yourself

• KISS stands fo...read more

GE Healthcare is a leading global provider of medical imaging, monitoring, biomanufacturing, and cell therapy technologies.

• GE Healthcare offers a wide range of products and services in the healthcare industry

• They specialize in medical imaging equipment such as MRI, CT, and ultrasound machines

• GE Healthcare also provides solutions for monitoring patient vital signs and managing healthcare data

• The company is involved in biomanufacturing processes and technologies for cell therap...read more

Loop in linked list and various scenarios

• A loop in a linked list occurs when a node points to a previous node in the list

• Scenarios include detecting and removing loops, finding the length of the loop, and breaking the loop

• Floyd's cycle-finding algorithm is commonly used to detect and remove loops

Pull up resistors in I2C are used to ensure proper signal levels and prevent bus contention.

• Pull up resistors are used to pull the signal lines high when they are not being actively driven low.

• The value of the pull up resistors is typically around 2.2k ohms to 10k ohms.

• The exact value of the pull up resistors depends on factors such as bus capacitance and speed requirements.

• Pull up resistors are necessary for proper operation of I2C communication.

• Example: For a standard I2C b...read more

Passing array of strings in a C function

• Declare the function prototype with array parameter

• Pass the array as argument when calling the function

• Access elements of the array within the function

• Example: void printStrings(char *strings[], int size) { }

There are four types of inheritance in object-oriented programming: single, multiple, multilevel, and hierarchical.

• Single inheritance: a class inherits from only one base class.

• Multiple inheritance: a class inherits from more than one base class.

• Multilevel inheritance: a class inherits from a class which in turn inherits from another class.

• Hierarchical inheritance: multiple classes inherit from a single base class.

Interrupt vector table is a data structure that maps interrupt numbers to their corresponding interrupt service routines.

• It is used in microcontrollers and operating systems to handle interrupts.

• Each entry in the table contains the address of the interrupt service routine for a specific interrupt.

• When an interrupt occurs, the processor looks up the corresponding entry in the table to find the address of the ISR to execute.

• The table is typically located in a fixed memory locat...read more

6 Sigma is a data-driven methodology for improving business processes and reducing defects.

• It aims to achieve a level of quality where the probability of a defect is 3.4 parts per million or less.

• It involves five phases: Define, Measure, Analyze, Improve, and Control (DMAIC).

• It is widely used in industries such as manufacturing, healthcare, and finance.

• It emphasizes on statistical analysis and measurement to identify and eliminate defects.

• It requires a strong commitment from ...read more

User testing involves observing real users interacting with a product to gather feedback and improve usability.

• Recruit a diverse group of users to represent the target audience

• Create tasks for users to complete while being observed

• Collect feedback through surveys, interviews, and observation

• Iterate on the design based on user feedback

• Use tools like usability testing software to track user interactions

Team handling for EPC Projects

• Assigning tasks based on team member's strengths

• Regular communication and feedback sessions

• Encouraging collaboration and knowledge sharing

• Monitoring progress and addressing issues promptly

• Providing necessary resources and support

• Ensuring adherence to project timelines and budget

• Maintaining a positive and motivated team culture

Data migration from on-premise to cloud involves transferring data from local servers to cloud-based storage systems.

• Assess the current data infrastructure and identify the data to be migrated

• Choose a suitable cloud storage solution based on requirements and budget

• Plan the migration process including data extraction, transformation, and loading (ETL)

• Test the migration process to ensure data integrity and security

• Execute the migration during off-peak hours to minimize disrupti...read more

AC to DC converter circuit converts alternating current (AC) to direct current (DC) for powering electronic devices.

• Uses diodes to rectify the AC signal into a pulsating DC signal

• Includes a filter capacitor to smooth out the pulsations

• May incorporate a voltage regulator to ensure a stable DC output

• Common types include full-wave rectifiers and bridge rectifiers

Risks are potential events or situations that could have negative impacts on a project's objectives.

• Risks are uncertainties that can affect the success of a project.

• They can be internal or external to the project.

• Examples include budget overruns, schedule delays, resource constraints, and technical challenges.